Aspects of spin dynamics and magnetic interactions

被引:86
作者
Antropov, VP [1 ]
Harmon, BN [1 ]
Smirnov, AN [1 ]
机构
[1] Iowa State Univ Sci & Technol, Ames Lab, Dept Phys & Astron, Ames, IA 50011 USA
关键词
spin dynamics; magnetic interactions; magnetic alignment;
D O I
10.1016/S0304-8853(99)00425-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Non-collinear magnetic alignment is somewhat unusual for equilibrium and these systems exhibiting such ground states are frequently 'victims' of competing forces. For non-equilibrium or dynamical systems (e.g. T > 0) non-collinear alignment is universal. We discuss such systems and present some basic formalism for evaluating from first principles the equation of motion and related relevant properties. Considerable discussion is also devoted to obtaining from first principles, parameters for model magnetic Hamiltonians. These models represent a convenient way to gain insight and to approximately evaluate magnetic interactions for very complex systems. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:148 / 166
页数:19
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